#include <bits/stdc++.h>

using namespace std;

#define fst(t) std::get<0>(t)
#define snd(t) std::get<1>(t)
#define thd(t) std::get<2>(t)

using ll = long long;
using P = std::tuple<int,int>;

const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};

bool h[100][100];

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    int N, M;
    std::cin >> N >> M;

    for(int i=0;i<M;++i){
        int a, b;
        std::cin >> a >> b;

        h[a][b] = true;
        h[b][a] = true;
    }

    int res = 0;
    
    for(int i=0;i<N;++i){
        for(int j=i+1;j<N;++j){
            for(int k=j+1;k<N;++k){
                for(int l=k+1;l<N;++l){
                    int x[4] = {i, j, k, l}, y[4] = {0, 0, 0, 0};
                    for(int a=0;a<4;++a){
                        for(int b=a+1;b<4;++b){
                            if(h[x[a]][x[b]]){
                                ++y[a];
                                ++y[b];
                            }
                        }
                    }

                    // auto g = [&](){
                    //     std::cout << i << ", " << j << ", " << k << ", " << l << ": " << y[0] << ", " << y[1] << ", " << y[2] << ", " << y[3] << std::endl;
                    // };

                    // g();
                    
                    auto f = [&y](){
                        for(int i=0;i<4;++i){
                            if(y[i] != 2){
                                return false;
                            }
                        }

                        return true;
                    };
                    
                    if(f()){++res;}
                }
            }
        }
    }

    std::cout << res << std::endl;
}